F means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. F Beko RFNE290L31WN, 256 L, 18 kg/24h, SN-T, No Frost system, F, White Beko RFNE290L31WN. Freezer net capacity: 256 L, Climate class: SN-T, Freezing capacity: 18 kg/24h, Storage time during power failure: 16 h, Noise level: 39 dB, Star rating: 3*, No Frost system. Door hinge: Right. Energy efficiency class: F, Annual energy consumption: 299 kWh. Product color: White